Canon has put another nail in the coffin of the dedicated camcorder by rolling out silent lenses for use with its new continuous autofocus Rebel 4Ti DSLR. We’ll take you through how it works and how autofocus has evolved over the decades.

Sony continues it technology-based assault on the high-end camera market with the Alpha SLT-A57. Will its blistering speed and advanced functionality help it unseat the entrenched brand names of Nikon and Canon?

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